*"ogonki"
In Internet forum speak, the asterisk means "I meant to say" or "You meant to say".
In linguistics, the asterisk means "This form is not attested (we don't have examples of people using it)" or "This form would be considered mistaken by speakers".
That means that the forum usage of asterisks is something like "I should have said X" while the linguistics use of asterisks is something like "I shouldn't have said X". :-(
https://en.wikipedia.org/wiki/Asterisk#Linguistics
"In linguistics, an asterisk is placed before a word or phrase to indicate that it is not used, or there are no records of it being in use."
https://en.wikipedia.org/wiki/Asterisk#Typography
"Asterisks may denote corrections to misspelling or misstatements in previous electronic messages"